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Finding the Fourth Proportional to 69,779.43, 104,678.87 and 25,397.91

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Solution

The fourth proportional to 69,779.43, 104,678.87 and 25,397.91 is: 38,100.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,779.43 : 104,678.87 = 25,397.91 : x
  2. Step 2: Convert to fraction form
    69,779.43/104,678.87 = 25,397.91/x
  3. Step 3: Cross multiply
    69,779.43x = 104,678.87 × 25,397.91
  4. Step 4: Simplify right side
    69,779.43x = 2,658,624,392.17
  5. Step 5: Solve for x
    x = 2,658,624,392.17/69,779.43
  6. Step 6: Final answer
    x = 38,100.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.